Where does diffusion of oxygen and carbon dioxide take place in the lungs?

a. alveoli and capillaries

b. bronchi and thorax

c. cilia and pleura

d. epiglottis and larynx

Which of the following is not an ecological abiotic factor? a. Sunlight b. Water c. Bacteria d. All are abiotic factors.

Except for gametes, all normal human cells contain A. at least one Y chromosome B. at least one X chromosome C. an X or a Y chromosome D. an X and a Y chromosome

Why do hormones cause changes only in specific body organs? A. A hormone is carried to a specific location by tiny tubes B. A hormone interacts only with target cells, which fit together with that hormone. C.

What are some other possible applications for paper chromatography

Were can you find moss

Explain how organisms contribute to fossil fuels.

Organisms that break down complex compounds and dead tissue are

Which is an example of dehydration synthesis? A.) DNA synthesis from nucleotides B.) conversion of proteins into its amino acids C.) conversion of lipids into fatty acids

Making chemical energy from light energy is called cellular respiration. True or false

True or false, in the water molecule, electrons are equally shared by hydrogen atoms and oxygen atoms